MEM21012Service and repair mechanical watch oscillating systems

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What an assessment for MEM21012 must cover

41 assessable components: 5 elements (22 performance criteria), 8 performance evidence and 11 knowledge evidence requirements. An audit-defensible tool maps every question and task back to these — that mapping is the coverage matrix Auditori generates alongside the assessment.

Elements & performance criteria

1 Determine job requirements

  • 1.1Follow standard operating procedures (SOPs)
  • 1.2Comply with work health and safety (WHS) requirements at all times
  • 1.3Select and use appropriate personal protective equipment (PPE) in accordance with SOPs
  • 1.4Identify job requirements from specifications, job sheets or work instructions

2 Identify oscillator types

  • 2.1Identify oscillating construction types and components
  • 2.2Establish the performance characteristics of the watch oscillating system
  • 2.3Record and document repair requirements

3 Diagnose oscillator condition

  • 3.1Select and use appropriate workshop tools and equipment
  • 3.2Inspect oscillator components for condition, function, end shake and performance
  • 3.3Record and report wear and damage to component parts
  • 3.4Determine appropriate repair process to rectify faults

4 Repair, replace and adjust oscillator components

  • 4.1Remove and reassemble balance complete and oscillator components using appropriate tools, equipment and techniques
  • 4.2Determine type and method of balance staff removal and replacement
  • 4.3Test security of replacement balance staff and oscillator components
  • 4.4Inspect condition and adjust balance wheel and oscillator components for correct operation
  • 4.5Determine type of roller and roller jewel and the method of removal and replacement procedures
  • 4.6Inspect, diagnose and adjust balance spring to achieve optimum performance and timekeeping
  • 4.7Inspect, service and replace components for shock protection devices fitted to mechanical oscillators

5 Test and adjust oscillator

  • 5.1Verify and confirm function of watch movement
  • 5.2Set up and operate mechanical watch timing machine and interpret readings
  • 5.3Verify watch performance and timekeeping
  • 5.4Adjust in-beat and rate, as required, according to performance and design characteristics

Performance evidence

  • following work instructions, standard operating procedures (SOPs) and safe work practices
  • liaising with customer, verifying condition and performance, and identifying repair costs
  • identifying different types and grades of mechanical watch oscillating systems
  • diagnosing faults in mechanical watch oscillating systems for wear and damage and determining appropriate repair action
  • inspecting and repairing faults in mechanical watch oscillating systems using appropriate workshop tools and equipment
  • repairing a mechanical watch with broken or worn balance staff utilising type and method of balance staff removal and replacement
  • inspecting and adjusting oscillator components for optimum performance in accordance with specifications
  • recording and documenting repairs.

Knowledge evidence

  • safe work practices and procedures and use of personal protective equipment (PPE)
  • types and grades of balance wheel construction
  • types of balance staffs construction
  • types of balance spring construction
  • types of rollers and roller jewels construction
  • balance staff replacement techniques and workshop procedures
  • performance characteristics of balance wheel completes
  • balance spring adjusting techniques
  • operating principles of shock protection devices
  • construction of shock protection devices
  • watch servicing procedures and techniques.

Unit content sourced from training.gov.au — © Commonwealth of Australia, licensed under CC BY 4.0. Auditori is not affiliated with the Department of Employment and Workplace Relations.

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Questions about assessing MEM21012

What does an assessment tool for MEM21012 need to cover?

To satisfy the Principles of Assessment and Rules of Evidence, an assessment for MEM21012 needs to address all 41 unit components: 5 elements with 22 performance criteria, 8 performance evidence requirements, 11 knowledge evidence requirements, and the foundation skills. A coverage matrix mapping each question and task to these components is what an auditor looks for.

How does Auditori generate an assessment tool for MEM21012?

Auditori pulls the current release of MEM21012 from training.gov.au and generates a complete package: candidate assessment, assessor guide with model answers and observation criteria, and a coverage matrix mapping every component. A suitably qualified person then reviews and approves the draft in a built-in workflow — consistent with ASQA's guidance on AI use in VET — before export as branded PDF and editable Word.

Is the first assessment tool really free?

Yes. Every new account includes one free credit — enough to generate the complete assessment tool for MEM21012 — with no card and no subscription required. After that it's pay-as-you-go per unit.

Can I check my existing MEM21012 assessment instead of generating a new one?

Yes — upload your existing assessment or learner guide and Auditori maps it against every element, performance criterion, PE and KE of MEM21012, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.

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